If you've ever thought of resorting to aluminum foil to redirect your home's poor WiFi signal, it turns out you're not actually that far off the mark. EurekAlert reported today that researchers at Dartmouth College have discovered that 3D printed signal reflectors, consisting of a thin layer of metal and plastic, can drastically and cheaply improve the wireless signal around a home.
These experiments were based off the idea of using an aluminum soda can behind a router in order to direct the signal away from deadening walls and other obstructions. The team was able to analyze a space and create a custom reflector that would optimize the WiFi signal in that room. They then fed their data into a custom program called WiPrint that designed an optimal plastic reflector and created it using a 3D printer. The last step is to cover the object in aluminum foil and place it on the router. You can see a demonstration in the video below.